1import { Subscription } from '../Subscription';
2import { InnerSubscriber } from '../InnerSubscriber';
3import { OuterSubscriber } from '../OuterSubscriber';
4import { Subscriber } from '../Subscriber';
5import { subscribeTo } from './subscribeTo';
6import { Observable } from '../Observable';
7
8export function subscribeToResult<T, R>(
9  outerSubscriber: OuterSubscriber<T, R>,
10  result: any,
11  outerValue: undefined,
12  outerIndex: undefined,
13  innerSubscriber: InnerSubscriber<T, R>
14): Subscription | undefined;
15
16export function subscribeToResult<T, R>(
17  outerSubscriber: OuterSubscriber<T, R>,
18  result: any,
19  outerValue?: T,
20  outerIndex?: number
21): Subscription | undefined;
22
23export function subscribeToResult<T, R>(
24  outerSubscriber: OuterSubscriber<T, R>,
25  result: any,
26  outerValue?: T,
27  outerIndex?: number,
28  innerSubscriber: Subscriber<R> = new InnerSubscriber(outerSubscriber, outerValue, outerIndex)
29): Subscription | undefined {
30  if (innerSubscriber.closed) {
31    return undefined;
32  }
33  if (result instanceof Observable) {
34    return result.subscribe(innerSubscriber);
35  }
36  return subscribeTo(result)(innerSubscriber) as Subscription;
37}
38